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A. F. ROGKWBLL.

\ GALL BELL. No. 426,330. PatentedApr. 22, 1890.

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MIHIHI www" UNITED STATES PATENT OEEIcE.

ALBERT F. ROCKVVELL, OF BRISTOL, CONNECTICUT, ASSIGNOR TO THE NEIV DEPARTURE BELL COMPANY, OF SAME PLACE.

CALL-BELL.

SPECIFICATION forming part of Letters Patent No. 426,330, dated April 22, 189D.

Application filed January Z7, 1890. Serial No. 338,240. (No model.)

To all whom, it may concern:

Be it known that I, ALBERT F. RocKwELL, of Bristol, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Call-Bells,

of which the following is a specification, reference being had to the accompanying drawings.

My improvements relate to that class of 1o mechanical call-bells made to imitate electric bells in sound; and my invention consists of certain appliances by means of which the bell may be rung by pressure either upon a butl ton at the top of the device or upon the bell i5 itself.

Referring to the accompanying drawings, which illustrate my improvements, Figure l is a vertical central section showing ordinary alarm-bell gearing and showing the bell at- 2o tached to the mainspring-arbor.

top view of the mechanism, the bell being removed and the top plate also being removed, but indicated in dotted lines. Fig. 3 is a view similar to Fig. l, showing a modification by which the bell is attached directly to the pushrod instead of to the mainspring-arbor.

Referring to the letters upon the drawings, A indicates the standard; B, the mainspring coiled within the standard; C, the hollow mainspring-arbor extending-- upward, so as to support the bell, and D ordinary gearing au d escapement, by which the bell-hammer E is made to strike in a clattering manner upon the bell when the mechanism is set in opera- 3 5 tion.

F indicates a spring secured to the standard at one end G, and free at the opposite end, Where it normally rests in the path ot' the bell-hammer, so as to prevent its move- 4o ment. This spring is provided with an opening near its center, through which the mainspring-arbor extends.

II indicates a push-rod located within a longitudinal passage in the arbor and bent at right angles at its lower end, so as to project slightly through a vertical slot I in the arbor and bear against the top of the spring.

K indicates a knob or button secured to the upper end of the push-rod, as shown in Fig.

Fig. 2 is a,

l. Instead of this, if desired, the bell itself 5o may be secured to the upper end of the pushrod, as shown in Fig. 3.

The operation of my improvements is as follows: The bell, for example, being secured to the mainspring-arbor, as shown in Fig. 1, the mainspring can be wound up by turning the bell, and the push-rod will turn freely with the mainspring arbor. By pressing upon the button, as shown in Fig. l, the push-rod will depress the free end of the spring F, so 6o as to release the bell-hammer, which will instantly be set to striking by the force ot' the mainsprin g operating through the gearing and escapement in the usual manner. When pressure is released from the button, the spring F will rise into the path of the bellhammer and cause its striking to cease. Thus it will be seen that the striking of the bell with a clattering sound will be continued as long as pressure upon the button is continued, and 7o no longer.

W'hen the bell, as in Fig. 3, is secured to the push-rod, the operation is similar. The bell being turned to wind up, the mainspring will turn the push-rod, and that will turn the mainspring-arbor. In this case downward pressure upon the bell will cause the ringingv ot the bell just as the downward pressure upon the button, as shown in Fig. l, will cause it to ring. Ro

What I claim as my improvement is- The combination, with a bell and bell-striking mechanism, of the inainspring-arbor eX- tending up through the bell and provided with a longitudinal passage, a reciprocating push-rod within the longitudinal passage and projecting out at one side of it through an opening, and a spring against which the lower end of the push-rod bears to depress the same and release the bell-striking mechanism, sub- 9o stantially as set forth.

In testimony of all which I have hereunto subscribed my name.

ALBERT F. ROCKWELL.

Witnesses:

CHARLIE DOWNS, ETTA. B. SPRING. 

